Clamp for barrel pumps



Apri127, 194s. y w, JACKSON l 2,440,372

` CLAMP PoR BARREL PUMPS Filed Jan. 1e, 1947 unnnnn INVENTOR. Wl L BURJACKSON @f www@ Patented Apr. 2'?, 1948 UNITED STATES PATENTn OFFICECLAMP FOR BARREL PUMPS Wilbur Jackson, Clatswortl'i,l Ga.

Application January 16, 1947, Serial No. 722,399

1 Claim.

My invention relates to a clamp or locking device which is well adaptedfor clamping the cylinder of a p-ump upon a barrel.

An important object of the invention is to provide means, including abarrel hole tting or screw threaded plug, whereby the cylinder of a pumpmay be readily clamped in a selected ad justed position, upon any depthof barrel.

A further object of the invention is to provide a pump clamp, forquickly and conveniently locking a, pump at any depth in a, barrel,without deforming or injuring the cylinder or barrel of the pump.

A still further object of the invention is to provide a clamp or lockingdevice of the above mentioned character, which is extremely simple andquite inexpensive to manufacture.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings, forming a part of this application, and inwhich like numerals are employed to designate like parts throughout thesame,

Figure 1 is a side elevation of the clamp or locking device embodying myinvention, and showing the same in use for clamping a pump cylinder upona barrel, parts in section,

Figure 2 is an enlarged plan view of the clamp or locking device, partsin section,

Figure 3 is a central Vertical section taken on line 3-3 of Figure 2,and,

Figure 4 is a vertical section taken on line 4 4 of Figure 2.

In the drawings, where for the purpose of illustration, is shown apreferred embodiment of my invention, the numeral 5 designates a barrelor liquid lled drum, having one of the standard sizes of screw threadedbarrel holes 6 provided in one of its ends. Arranged upon the barrel 5,in position for removing or pumping out the liquid contents thereof, isa lift type or barrel pump l, including the pump cylinder 8. This pumpcyliny.der 8 extends through a cylindrical opening 9 in a screw threadedbarrel hole fitting or plug I0, and is adapted to be clamped in placewithin this opening 9 by means to be described. The pump cylinder 8 hasa close t within the opening 9, but is free to slide, or to belongitudinally adjusted therein. The barrel hole tting III has ahexagonal head II, and external screw threaded portions I2 and I3, tofit different sizes of standard barrel holes. The screw threaded portionI2 is shown in engagement within the screw threaded barrel hole 6,Figures 1 and 3.

Arranged upon the top of the fitting I0 is a ilat preferably generallycircular clamp plate or ring I4, having an elongated radial handle I5formed integral therewith. The clamp plate I4 has a central circularopening I6, for receiving the pump cylinder 8, and this opening may be.of the same diameter as the diameter of the opening 9. Formed in theclamp plate I4, and preferably arranged near the handle I5 is acircularly curved slot Il'. This circularly curved slot I'I is eccentricwith respect to the circular opening I6 and also with respect to theopening 9, see Figure 2. A screw I8, seated upon a washer I9, engageswithin a screw threaded opening 20 in the barrel hole ntting II); andthis screw passes through the slot I'I, which is slightly wider than thediameter of the screw. The eccentric slot II is arranged so that whenthe clamp plate I4 is turned about the pump cylinder 8, until the shankof screw I8 is at the end of the slot I'I radially nearest to the centerof the opening I6, the pump barrel 8 will be free to be adjustedlongitudinally, as desired.

The operation of the clamp or locking device is as follows:

The screw I8 is loosened, so that the clamp plate I4 may be turned aboutthe pump cylinder B, to loosen or free such cylinder. When the shank ofthe screw I8 reaches the end of the eccentric slot Il, radially nearestto the center of the circular opening I 6, the pump cylinder will befree, and it is then adjusted longitudinally to the desired depth in thebarrel 5. When this has been done, the user turns the clamp plate I4 inthe opposite direction, for clamping or locking the pump cylinder 8 inthe selected adjusted position. The handle I5 is, of course, provided tofacilitate the turning of the clamp plate I4. The coaction of the screwIll within the eccentric slot I1 causes the pump barrel 8 to be securelyclamped within the opening 9 of fitting I0. The clamp plate I4 exerts aclamping force upon one side of the pump cylinder, and the pump cylinderis clamped or locked against the opposite side of the opening Q. Awedging action between the stationary screw I3 and the eccentric slot Iloccurs when the clamp plate I4 is turned, for tightening the same. Whenthe pump barrel 8 has thus been clamped in the selected adjustedposition, the screw I8 may be tightened to lock the clamp plate in theclamped position.

It is thus seen that an extremely simple device is provided, whereby thepump may be quickly and conveniently adjusted to diierent depths withina barrel. The clamp or locking device is positive in action, and it isextremely strong and durable.

It is to be understood that the form of my invention herewith shown anddescribed is to be taken as a preferred example of the same, and thatvarious changes in the shape, size, and arrangement .of parts may beresorted to, without departing from the spirit of my invention, or thescope of the subjoined claim.

Having thus described my invention, what I claim is:

A tting adapted to be mounted upon a. barrel and provided with a. mainopening, a. clamp plate arranged upon 'the tting and provided with aymain `opening and an eccentric slot, the main openings being adapted toreceive the cylinder of a. pump or the like, :and a pin secured to thefitting and projecting into the eccentric slot and co-act- '.4 ing withthe slot when the clamp plate is turned for shifting the clamp platebodily laterally to clamp the cylinder against the side wall of the mainopening in the tting.

WILBUR JACKSON.

REFERENCES CITED The following references are of record in the 10 nl@ ofthis patent:

UNITED STATES PATENTS

